小编sha*_*han的帖子

我正在尝试将我的 spacy 版本升级到每晚，特别是为了使用 spacy 变压器

所以我转换了spacy简单的火车数据集，其格式如下

td = [["Who is Shaka Khan?", {"entities": [(7, 17, "FRIENDS")]}],["I like London.", {"entities": [(7, 13, "LOC")]}],]

以上至

[[{"head": 0, "dep": "", "tag": "", "orth": "Who", "ner": "O", "id": 0}, {"head": 0, "dep": "", "tag": "", "orth": "is", "ner": "O", "id": 1}, {"head": 0, "dep": "", "tag": "", "orth": "Shaka", "ner": "B-FRIENDS", "id": 2}, {"head": 0, "dep": "", "tag": "", "orth": "Khan", "ner": "L-FRIENDS", "id": 3}, {"head": 0, "dep": "", "tag": …

我正在尝试为我的Windows窗体应用程序创建备份和还原功能.

所以,我试图进行数据库恢复.我的代码是这样的:

string cbdfilename = "c:\\Users\\Public\\Public Document";
SqlConnection.ClearAllPools();
SqlConnection con = new SqlConnection("Data Source=(LocalDB)\\v11.0;AttachDbFilename=|DataDirectory|\\BbCon.mdf;Integrated Security=True;Connect Timeout=30;");
string sql;

sql = "Use master;Alter Database BbCon Set Single_User With Rollback Immediate;Restore Database BbCon From Disk = @FILENAME With Replace;Alter Database BbCon Set Multi_User;";

SqlCommand cmd = new SqlCommand(sql, con);
cmd.Parameters.AddWithValue("@FILENAME", cbdfilename);

con.Open();

try
{
    cmd.ExecuteNonQuery();
}
catch(Exception ex)
{
    MessageBox.Show("Restore DB failed" + ex.ToString());
}
finally
{
    con.Close();
    con.Dispose();
}

但是当我尝试运行它时,我收到一个错误:

还原db失败System.Data.SqlClient.SqlException(0X80131904):userdoes无权更改数据库BbCon.mdf数据库不存在或者数据库未处于允许访问检查的状态.

有人可以帮我吗？